I downloaded, installed and activated 4.0.1 on wordpress 3.0.4. I can no longer access anything on dashboard, can no longer upgrade my wordpress version or remove or upgrade your plugin. I repeatedly get this error whenever I try to do anything:
Fatal error: Call to undefined function get_current_screen() in /home/emailmar/public_html/wp-content/plugins/ultimate-tinymce/admin_functions.php on line 29
I would really appreciate if you could provide some assistance. Thank you.
This is my website: http://tiny.cc/9wjfqw